Cave Bears stand 15 feet tall, weighing up to over a ton and a half, and are more muscular than any other bear.
— Allen, about Cave Bears

The Cave Bear (Ursus Spelaeus) is a genus of large bear that originated during the Early Pleistocene epoch in what is now North America, Europe, and Asia. Arguably the apex predator of the Ice Age, it was also the largest species of bear that ever existed as well as arguably the largest mammalian carnivore of all time, standing over 5 meters on its hind legs and weighing over a ton.

In their first physical appearance in the Series 3 finale "Mammoth's Undertaking Journey", an individual Cave Bear, named Kodi, was encountered several times by the Team. Kodi was brought back to the park from Siberia of 10,000 years ago and currently lives in a section of the park where it is a cold cave environment added with some forestry and a river full of fish.


Era & DiscoveryEdit

Cave Bears lived during the Pleistocene over 1 million years ago and died out at the end of the Ice Age 10,000 years ago. They lived alongside animals like Ice age Bison, woolly rhinos, cave lions, and the woolly mammoths and were also the apex predators of the Ice Age.

Cave bear skeletons were first described in 1774 by Johann Friederich Esper in his book "Newly Discovered Zoolites of Unknown Four Footed Animals".

Physical AttributesEdit

A species of prehistoric bear, Cave Bears were the largest species of bears ever discovered. Standing 13–18 feet (4–5 m) tall (on their hind legs at least) and weighing up to 1–2 tons (2,000–4,000 lbs.), Cave Bears were more muscular and even stronger than any other species of bear. This makes Cave Bears arguably the largest terrestrial mammalian carnivore of all time. Despite their large size, Cave Bears were very fast animals, able to reach speeds in excess of 20–45 mph (32–72 km/h) and run over a long distance. This is because their front and rear legs were equal in length as opposed to even the largest modern bears in which their front legs are shorter than their back legs, which allows them to reach speeds of up to 35 mph (53 km/h) and could run over a short distance.

Cave Bears looked very similar to regular brown bears, but they were larger and more muscular. Unlike some brown bear subspecies, they did not have fatty humps on their backs. They also exhibited major sexual dimorphism, as the female of the species was much smaller in size than the quite large male. Cave Bears were huge, but unfortunately, they couldn't climb trees like most modern bears.

Regardless of gender or size, Cave Bears were very large mammalian carnivores. They had long arms armed with sharp claws and much like Tyrannosaurus rex, they also had a mouth of bone-crushing teeth, though not quite as strong. Cave Bears also had a thick hide which kept them warm during the winter. However, despite these attributes, Cave Bears did have one weakness; their underside. Because of their giant size, Cave Bears were also very physically strong animals.

Behavior & TraitsEdit

Like many predatory mammals, Cave Bears were both social and solitary animals. Hence the name, they lived in caves. The females were highly protective of their cubs and the males were known to be cannibalistic, eating bear cub if they were ever hungry. Males had large territories of around 200 square miles (518 square kilometers).

Like most other bears, though carnivores, Cave Bears were also generalist feeders, not being very carnivorous bears, eating berries and vegetation, as well as scavenging carrion, and presumably killing smaller animals. However, if necessary, they would hunt larger prey, even ones as mighty as the Mammoth. In winter months (hence their name), they would hibernate in caves, like modern bears. And in order to hibernate in winter, they would eat barries and early spring vegetation as well as fish to last them several months.

If a Cave Bear was found in a cave and awoken, it would chase away, not hunt, whatever it was that disturbed it in its sleep. But either way, whether chasing an intruder, hunting prey or even fighting a rival, like all bears, Cave Bears were able to rear up on their hind legs to intimate its opponents. Unlike most bears, Cave Bears couldn't climb trees. However, much like the sauropod dinosaurs, they were able to use their raw physical strength to bring trees down.

Journal EntryEdit

Large species of bears that hibernated in caves, hence their name 'the Cave Bear', these omnivorous animals were the apex carnivores of their time, hunting herbivores as big as the Woolly Mammoth. Standing around 15 feet tall and weighing over 2000 pounds, these bears were more muscular than any other bear. They were also the largest mammalian carnivores that ever lived.

However, predatory as they were, these bears fed on anything, like all modern bears, making them omnivorous, and they couldn't climb trees. The males had larger appearances than the females. Should you ever encounter a sleeping Cave Bear, it would be unwise to startle it, let alone, wake it up. If you disturb it, that will be the last thing you ever do.

— Allen, in his Journal, about Cave Bears



  • The sound effect for the Cave Bear are that of typical bear sounds, as well as sounds from other animals, such as a lion, tiger, walrus, reptilian hissing, bull, and elephant to give it a more intimidating appearance.
  • Cave Bears died out long before 10,000 years ago. Allen even pointed this out right after the chase.
  • Cave Bears actually may have been mainly vegetarian.
  • Cave Bears were probably not very aggressive, like some modern bears, though this is speculation.
  • Cave Bears were not as large and as powerful as depicted in Prehistoric Earth. In fact, they are believed to have been smaller than present-day brown bears.
  • The Cave Bear is the largest terrestrial mammalian carnivore brought to the park.
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